DS1248Y-200

Overview

The DS1248Y-200 is a parallel nonvolatile RAM (NVRAM) real-time clock (RTC) module manufactured by Analog Devices Inc./Maxim Integrated. It integrates 128KB of NV SRAM with phantom clock functionality, maintaining timekeeping during power outages without external backup switching. The device supports date formats of YY-MM-DD-dd and time formats of HH:MM:SS:hh in both 12-hour and 24-hour modes. Operating within a supply voltage range of 2.97V to 3.63V or 4.5V to 5.5V, it draws a maximum current of 10mA at 5V during timekeeping. Designed for through-hole mounting, the component is housed in a 32-DIP Module package measuring 0.600 inches (15.24mm), suitable for industrial applications between 0°C and +70°C.

Feature Summary

• Integrates 128KB NV SRAM with phantom clock technology for continuous timekeeping
• Supports parallel interface with standard RTC date and time formats
• Dual voltage operation: 2.97V–3.63V or 4.5V–5.5V
• Housed in a 32-DIP Module (32-EDIP) through-hole package

Applications

• Industrial systems requiring persistent time and data storage
• Embedded controllers needing nonvolatile memory with calendar functions
• Equipment operating in environments with intermittent power supply

Procurement Notes

Verify the specific suffix 'Y-200' against official manufacturer documentation to confirm pinout compatibility and electrical specifications. Ensure the selected variant matches the required voltage range and package dimensions for the target PCB design. Cross-reference the 32-DIP Module form factor with existing board layouts to guarantee mechanical fit.

Selection Notes

Select this component when a combined RTC and large NVRAM solution is required in a single DIP package. The phantom clock feature eliminates the need for external battery switching circuits, simplifying system design. Confirm that the parallel interface timing requirements align with the host microcontroller's capabilities and that the 128KB capacity meets the application's data retention needs.

Part Context

This part belongs to the Maxim Integrated DS1248 series of nonvolatile RAM modules. These components are designed to replace standard SRAM chips in systems where data preservation across power cycles is critical. The integration of RTC functionality allows the device to serve dual purposes as both a memory bank and a timekeeper, reducing component count in embedded designs.

Replacement Considerations

Consult official substitution guides for compatible parts within the DS1248 family. Verify pin-to-pin compatibility and electrical parameter alignment before replacing the original component.